If equipped with a high caliber Main Gun (280mm or more): increases damage dealt with Main Gun by up to 15% (25%) depending on the distance the shells travel. Also increases Burn damage dealt to enemies by 20% (50%).

Level 10

Main Gun Efficiency +5%

Ship Rarity increases to ★★★★☆☆

Mizuho's Intuition

Every 20 seconds: 30% (70%) chance to increase own Evasion by 10% (20%) and Accuracy by 20% (50%) for 12 seconds.

Level 15

Anti-Air Gun Efficiency +10%

Barrage Gunnery Manual

Every 8 times Main Gun is fired: fires a special barrage. If equipped with Prototype 310mm gun, increases Main Gun efficiency by 4.5% (12%); also improves said barrage and fire it every 4 times Main Gun is fired.

If equipped with a high caliber Main Gun (280mm or more): increases damage dealt with Main Gun by up to 15% (25%) depending on the distance the shells travel. Also increases Burn damage dealt to enemies by 20% (50%).

Mizuho's Intuition

Every 20 seconds: 30% (70%) chance to increase own Evasion by 10% (20%) and Accuracy by 20% (50%) for 12 seconds.

Barrage Gunnery Manual

Every 8 times Main Gun is fired: fires a special barrage. If equipped with Prototype 310mm gun, increases Main Gun efficiency by 4.5% (12%); also improves said barrage and fire it every 4 times Main Gun is fired.